scholarly journals Construction of Au@Metal-organic framework for sensitive determination of creatinine in urine

2021 ◽  
pp. 2141003
Author(s):  
Yuning Jiang ◽  
Yanzheng Cai ◽  
Sen Hu ◽  
Xiaoyu Guo ◽  
Ye Ying ◽  
...  
Keyword(s):  
Limit Of Detection ◽  
Metal Organic Framework ◽  
Sers Substrate ◽  
Local Surface Plasmon Resonance ◽  
Chronic Nephritis ◽  
Composite Substrate ◽  
Metal Organic ◽  
Sensitive Determination ◽  
Spr Effect

Creatinine level in urine is an important biomarker for renal function diseases, such as renal failure, glomerulonephritis, and chronic nephritis. The Au@MIL-101(Fe) was prepared by in situ growth of Au nanoparticles in MIL-101(Fe) as a selective SERS substrate. The Au@MIL-101(Fe) offers the great local surface plasmon resonance (SPR) effect due to gold nanoparticles aggregation inside metal-organic frameworks. The framework structure could enrich trace target samples and drag them into SPR hot spots. The optimal Au@MIL-101(Fe) composite substrate is used for analyzing creatinine in urine and the limit of detection is down to 0.1[Formula: see text][Formula: see text]mol/L and a linear relationship is ranging from 1[Formula: see text][Formula: see text]mol/L to 100[Formula: see text][Formula: see text]mol/L.

scholarly journals Cu-based metal–organic framework HKUST-1 as effective catalyst for highly sensitive determination of ascorbic acid

RSC Advances ◽  
2020 ◽  
Vol 10 (39) ◽  
pp. 22881-22890 ◽  
Author(s):  
Tianyang Shen ◽  
Tianchen Liu ◽  
Hanqi Mo ◽  
Zichen Yuan ◽  
Feng Cui ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Room Temperature ◽  
Metal Organic Framework ◽  
Solvent Method ◽  
Effective Catalyst ◽  
Highly Sensitive ◽  
Metal Organic ◽  
Sensitive Determination ◽  
Organic Framework

In this work, a Cu-based nanosheet metal–organic framework (MOF), HKUST-1, was synthesised using a solvent method at room temperature and it demonstrated high capability and sensitivity towards the oxidation of ascorbic acid (AA).

scholarly journals Synthesis of metal organic framework (MOF-5) embedded cryogel composite and its application for the extraction and determination of cholesterol from milk samples

2021 ◽  
Vol 12 (1) ◽  
pp. 45-51
Author(s):  
Fouzia Chang ◽  
Najma Memon ◽  
Huma Shaikh ◽  
Ayaz Ali Memon ◽  
Shahabuddin Memon ◽  
...  
Keyword(s):  
Limit Of Detection ◽  
Metal Organic Framework ◽  
Extraction Process ◽  
Zinc Salt ◽  
Coefficient Of Determination ◽  
New Class ◽  
Milk Samples ◽  
Precision Limit ◽  
Metal Organic

Metal-organic frameworks (MOFs)/coordination polymers (CPs) are a new class of hybrid inorganic/organic porous material. Recently MOFs have attracted much attention due to their large surface area, tunable pore structure, and high thermal stability. MOF-5 is composed of zinc salt and 1,4 benzene dicarboxylic linker. In the current study, MOF-5/cryogel composite was applied to extract cholesterol selectively from milk samples. This extraction process was used to clean-up milk samples with MOF-5/cryogel composite followed by determination of cholesterol in milk using UV-Vis spectrophotometric technique. The parameters such as concentration of cholesterol, volume of cholesterol solution, adsorbent amount, adsorption and desorption time were studied to obtain good extraction of cholesterol. The amount of cholesterol adsorbed and desorbed was 84 and 80%, respectively, from milk samples using MOF-5 composite cryogel. The developed method was validated in terms of linearity, accuracy, precision, limit of detection, and quantification. The response was linear in the range of 5-200 µg/mL with a coefficient of determination (r2) of 0.990. Detection limit (0.15 µg/mL) and quantification (0.45 µg/mL) were obtained.

A metal-organic framework-based amperometric sensor for the sensitive determination of sulfite ions in the presence of ascorbic acid

2021 ◽  
pp. 106569
Author(s):  
Raissa Tagueu Massah ◽  
Tobie J. Matemb Ma Ntep ◽  
Evangeline Njanja ◽  
Sherman Lesly Zambou Jiokeng ◽  
Jun Liang ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Metal Organic Framework ◽  
Amperometric Sensor ◽  
Metal Organic ◽  
Sensitive Determination ◽  
Sulfite Ions ◽  
Organic Framework
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